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Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. | |
What is the capital of Missouri? | [
"Burlington",
"Saint Louis",
"Jefferson City",
"Kansas City"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
Which better describes the Sonoran Desert ecosystem? | [
"It has mostly small plants. It also has only a few types of organisms.",
"It has dry, thin soil. It also has many different types of organisms."
] | 1 | Figure: Sonoran Desert.
The Sonoran Desert is a hot desert ecosystem in the southwestern United States and northwestern Mexico. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A hot desert is a type of ecosystem. Hot deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the Sonoran Desert has dry, thin soil. It also has many different types of organisms. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1. | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
dodge - dynamite | [
"drive",
"deer"
] | 0 | closed choice | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since drive is between the guide words dodge - dynamite, it would be found on that page. | |
Not supported with pagination yet | What do these two changes have in common?
baking cookies
burning a candle | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes."
] | 1 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Baking cookies is a chemical change. The type of matter in the cookie dough changes when it is baked. The cookie dough turns into cookies!
Burning a candle is a chemical change. Both the wick and the melted wax burn. They react with oxygen in the air and turn into soot, carbon dioxide, ... | |
Not supported with pagination yet | What is the mass of an ear of corn? | [
"15 tons",
"15 ounces",
"15 pounds"
] | 1 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of an ear of corn is 15 ounces.
15 pounds and 15 tons are both too heavy. |
Is honey a solid, a liquid, or a gas? | [
"a liquid",
"a solid",
"a gas"
] | 0 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | Honey is a liquid. A liquid takes the shape of any container it is in.
If you pour honey into a container, the honey will take the shape of that container. But the honey will still take up the same amount of space. | ||
Not supported with pagination yet | Select the one animal that has all of the mollusk traits listed above. | [
"Earthworms live in soil and have no limbs. Their bodies are soft, cylindrical, and made up of many segments.",
"Banana slugs have a soft body with a flat underside called the foot. Slugs use their muscular foot to move. Banana slugs also have small teeth on their tongue! These file-like teeth help banana slugs e... | 1 | Mollusks are a group of animals with similar traits. The following traits can be used to identify mollusks:
They have a soft body.
They have a muscular foot or tentacles. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify animals | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Mollusks have the following traits:
They have a soft body.
They have a muscular foot or tentacles.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A banana slug has the following ... |
Which continent is highlighted? | [
"Africa",
"Europe",
"North America",
"South America"
] | 0 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | ||
What is the capital of Connecticut? | [
"Baton Rouge",
"Providence",
"Concord",
"Hartford"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | |||
Not supported with pagination yet | Based on this information, what is Chloe's phenotype for the ear type trait? | [
"curled ears",
"straight ears"
] | 0 | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for straight ears (e) is recessive to the allele for curled ears (E).
Chloe is an American curl cat from this group. Chloe has the homozygous geno... | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Chloe's genotype for the ear type gene is EE. Chloe's genotype of EE has only E allelles. The E allele is for curled ears. So, Chloe's phenotype for the ear type trait must be curled ears.
To check this answer, consider whether Chloe's alleles are dominant or recessive. The allele for straight ears (e) is recessive to ... |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Jasper's Falstaffian nature makes him stand out at a party. | [
"the Bible",
"Shakespeare"
] | 1 | closed choice | grade8 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion Falstaffian is Shakespeare.
Sir John Falstaff, a comical character in several of William Shakespeare's plays, is known for his cheerful sociability and sometimes off-color humor.
The allusion Falstaffian means characterized by joviality and enjoyment of food and drink. | |
Which country is highlighted? | [
"The Bahamas",
"Saint Lucia",
"Barbados",
"Saint Vincent and the Grenadines"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Lucia. | |||
Not supported with pagination yet | What does the verbal irony in this text suggest?
While waiting for her search results, Whitney exclaimed, "My Internet connection is as speedy as a snail!" | [
"The Internet connection was very slow.",
"The Internet connection was very fast."
] | 0 | closed choice | grade7 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
As speedy as a snail suggests that the Internet connection was very slow. A snail is not speedy, and neither was Whitney's Internet connection. | |
What is the name of the colony shown? | [
"Mississippi",
"Pennsylvania",
"New Jersey",
"Delaware"
] | 2 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New Jersey. | |||
Complete the sentence.
A pine seed can grow into (). | [
"pollen",
"a male cone",
"a new plant"
] | 2 | Pine seeds grow inside of pinecones. | closed choice | grade4 | natural science | biology | Plants | Describe and construct conifer life cycles | Conifers are plants that grow cones. Conifers use their cones to reproduce, or make new plants like themselves. How do conifers use their cones to reproduce?
Conifers can grow male and female cones. Male cones make pollen, and female cones make eggs. Pollination is what happens when wind blows pollen from male cones on... | A seed can germinate and grow into a new plant.
The new plant can grow male cones and pollen. But a seed does not grow into a male cone or pollen. | |
Not supported with pagination yet | Which sentence is more formal? | [
"When it is hot out, a glass of mint lemonade always hits the spot.",
"On a hot day, mint lemonade is a perfect refreshment."
] | 1 | closed choice | grade7 | language science | writing-strategies | Author's purpose and tone | Which sentence is more formal? | Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing:
Type | Examples
slang | cool, awesome
idioms | knock your socks off
conversational language | gonna, kinda, yeah
abbreviated language | ASAP, FYI
overly simple or imprecise lan... | The second sentence is less formal. You can tell because it uses an idiom (hits the spot).
The first sentence uses formal language in place of the idiom, so it is more formal overall. | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Select the bird below. | [
"ostrich",
"tiger shark"
] | 0 | Birds have feathers, two wings, and a beak. A barn owl is an example of a bird. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | An ostrich is a bird. It has feathers, two wings, and a beak.
The ostrich is the largest bird alive today. Ostriches cannot fly, but they can run very fast.
A tiger shark is a fish. It lives underwater. It has fins, not limbs.
Tiger sharks are nocturnal. This means that they are active mostly at night. | |
Which of the following could David's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Based on this information, what is Fieval's genotype for the fur texture gene? | [
"Ff",
"straight fur"
] | 0 | In a group of Syrian hamsters, some individuals have straight fur and others have wavy fur. In this group, the gene for the fur texture trait has two alleles. The allele F is for straight fur, and the allele f is for wavy fur.
Fieval, a Syrian hamster from this group, has straight fur. Fieval has one allele for straigh... | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's genotype for a gene is its combination of alleles for that gene. Fieval has one allele for straight fur (F) and one allele for wavy fur (f). So, Fieval's genotype for the fur texture gene is Ff. |
Not supported with pagination yet | Which object has less thermal energy? | [
"a pot of spaghetti sauce at a temperature of 140°F",
"a pot of spaghetti sauce at a temperature of 100°F"
] | 1 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ... | The two pots of spaghetti sauce have the same mass but different temperatures. Since the 100°F pot of spaghetti sauce is colder than the 140°F pot of spaghetti sauce, it has less thermal energy. |
Not supported with pagination yet | Select the one true statement. | [
"Vacuoles are outside the nucleus of an animal cell.",
"Mitochondria direct cell activities by sending instructions to different parts of a plant cell.",
"Animal cells can have chloroplasts but do not have a nucleus."
] | 0 | closed choice | grade7 | natural science | biology | Cells | Compare cells and cell parts | |||
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"searching for something",
"snooping for something"
] | 1 | closed choice | grade4 | language science | vocabulary | Shades of meaning | Positive and negative connotation | Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations.
For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations.
Eager has a positive connotation. It is a n... | Snooping for something has a more negative connotation. Snooping is looking for something without permission. | |
Not supported with pagination yet | What kind of sentence is this?
Please take the dirty towels outside. | [
"interrogative",
"imperative"
] | 1 | closed choice | grade4 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence makes a request, so it is an imperative sentence. Here, it ends with a period. | |
Select the organism in the same species as the crown-of-thorns sea star. | [
"Argema mittrei",
"Eriocheir sinensis",
"Acanthaster planci"
] | 2 | This organism is a crown-of-thorns sea star. Its scientific name is Acanthaster planci. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A crown-of-thorns sea star's scientific name is Acanthaster planci.
Acanthaster planci has the same scientific name as a crown-of-thorns sea star. So, these organisms are in the same species.
Eriocheir sinensis does not have the same scientific name as a crown-of-thorns sea star. So, Acanthaster planci and Eriocheir si... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Although Kevin hasn't worked in years, his mother prefers to say that he's between jobs right now. | [
"oxymoron",
"euphemism"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Between jobs is an indirect way of saying unemployed. | |
Not supported with pagination yet | Using only these supplies, which question can Perry investigate with an experiment? | [
"Does a big toy car go down the wooden ramp faster than a small toy car?",
"Do toy cars go faster down the ramp made of wood or the ramp made of cardboard?",
"Do toy cars with plastic wheels go faster down the cardboard ramp than toy cars with metal wheels?"
] | 1 | Perry and his sister are building ramps to race their toy cars down. Perry notices that the cars go down some of the ramps faster than others. He wonders what factors affect the cars' speed. So, he decides to design an experiment. He has the following supplies available:
two identical toy cars
a wooden ramp three feet ... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Which bird's beak is also adapted to get nectar out of long flowers? | [
"bufflehead",
"bronzy sunbird"
] | 1 | Broad-tailed hummingbirds live in the woodlands and meadows of western North America. The shape of the 's beak is adapted to get nectar out of long flowers.
Figure: broad-tailed hummingbird. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the broad-tailed hummingbird.
The broad-tailed hummingbird has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The broad-tailed hummingbird's long, thin beak can reach deep into the flowers.
Now look at each bird. Figure out which bird has a similar adaptation.
The bronz... | |
Not supported with pagination yet | Select the elementary substance. | [
"silicon dioxide (SiO2)",
"palladium (Pd)",
"carbon dioxide (CO2)"
] | 1 | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Identify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | Look at the chemical formula for each substance, and count the number of symbols in the formula. Then, decide if the substance is an elementary substance. The chemical formula for silicon dioxide contains two symbols: Si for silicon and O for oxygen. So, silicon dioxide is made of two chemical elements bonded together.... | |
What is the name of the colony shown? | [
"New Jersey",
"Delaware",
"Virginia",
"Indiana"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Delaware. | |||
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, but the particles in sample A have a higher average speed than the particles in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sampl... | |
Not supported with pagination yet | Which tense does the sentence use?
On cold days, my teacher drinks hot tea. | [
"present tense",
"future tense",
"past tense"
] | 0 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, drinks. The verb ends in -s and tells you about something that is true or happening now. | |
What is the name of the colony shown? | [
"Pennsylvania",
"Massachusetts",
"Rhode Island",
"Connecticut"
] | 2 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Rhode Island. | |||
Not supported with pagination yet | Which sentence states a fact? | [
"Alexander Graham Bell invented the electric telephone in the 1870s.",
"The telephone was the greatest invention of its time."
] | 0 | closed choice | grade5 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or fe... | The first sentence states a fact.
Alexander Graham Bell invented the electric telephone in the 1870 s.
It can be proved by reading a book about Alexander Graham Bell.
The second sentence states an opinion.
The telephone was the greatest invention of its time.
Greatest shows what a person believes, thinks, or feels. Ano... | |
What is the name of the colony shown? | [
"New Hampshire",
"Connecticut",
"New York",
"Rhode Island"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Rhode Island. | |||
What is the capital of Missouri? | [
"Jefferson City",
"Bismarck",
"Springfield",
"Fayetteville"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
Not supported with pagination yet | What do these two changes have in common?
cooking an egg
an iceberg melting slowly | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating."
] | 3 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Cooking an egg is a chemical change. The heat causes the matter in the egg to change. Cooked eggs and raw eggs are made of different types of matter.
An iceberg melting is a change of state. So, it is a physical change. An iceberg is made of frozen water. As it melts, the water changes ... | |
Select the organism in the same genus as the spot-billed pelican. | [
"Falco novaeseelandiae",
"Strix uralensis",
"Pelecanus crispus"
] | 2 | This organism is a spot-billed pelican. Its scientific name is Pelecanus philippensis. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A spot-billed pelican's scientific name is Pelecanus philippensis. The first word of its scientific name is Pelecanus.
Pelecanus crispus is in the genus Pelecanus. The first word of its scientific name is Pelecanus. So, Pelecanus crispus and Pelecanus philippensis are in the same genus.
Falco novaeseelandiae is in the ... | |
Not supported with pagination yet | Which is a compound sentence? | [
"In 1900, the U.S. state with the largest population was New York.",
"Rumors about Mayor Schmidt were spreading like wildfire, so she set the record straight at a press conference."
] | 1 | closed choice | grade6 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The first sentence is the compound sentence. It is made up of two independent clauses joined by the coordinating conjunction so.
Rumors about Mayor Schmidt were spreading like wildfire, so she set the record straight at a press conference. | |
Which of the following could Caleb's test show? | [
"how well the weather station would work when it was windy",
"if the weather station would work when the temperature was 50°C"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Which figure of speech is used in this text?
Men work together . . . whether they work together or apart.
—Robert Frost, "A Tuft of Flowers" | [
"paradox",
"euphemism"
] | 0 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a paradox, a statement that might at first appear to be contradictory, but that may in fact contain some truth.
Men work together . . . whether they work together or apart at first appears to be contradictory, as it seems impossible to work together and work apart at the same time. However, it contains so... | |
Which of these continents does the equator intersect? | [
"Africa",
"Australia",
"Europe"
] | 0 | closed choice | grade5 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects Africa. It does not intersect Europe or Australia. | ||
Not supported with pagination yet | What is the volume of a bottle of dish soap? | [
"2 cups",
"2 fluid ounces",
"2 gallons"
] | 0 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups,... | The best estimate for the volume of a bottle of dish soap is 2 cups.
2 fluid ounces is too little and 2 gallons is too much. |
What is this pterosaur's scientific name? | [
"Pterodactylus antiquus",
"Vectidraco daisymorrisae"
] | 1 | This illustration shows the outline of a pterosaur, an ancient flying reptile. No pterosaurs are alive today—they are extinct. Daisy Morris, a four-year-old girl, discovered this pterosaur's fossil! The illustration shows which bone Daisy found. The pterosaur's scientific name refers to Daisy Morris. | closed choice | grade4 | natural science | biology | Scientific names | Origins of scientific names | When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the w... | This organism's scientific name refers to Daisy Morris.
The word daisymorrisae refers to Daisy Morris. So, this pterosaur's scientific name is Vectidraco daisymorrisae. | |
Not supported with pagination yet | Which tense does the sentence use?
Scientists will measure the rainfall in Allenville. | [
"future tense",
"past tense",
"present tense"
] | 0 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, measure. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Select the part whose main job is to control which substances enter and leave a plant cell. | [
"cell membrane",
"cytoplasm",
"mitochondria",
"vacuole"
] | 0 | closed choice | grade7 | natural science | biology | Cells | Identify functions of plant cell parts | Plant cells are made up of many different parts. Each cell part has a function that helps the cell survive and grow.
Some cell parts are called organelles. Organelles are cell structures that are surrounded by their own membranes. Here are some of the organelles in plant cells:
Chloroplasts and mitochondria work togeth... | The cell membrane is a thin layer that wraps around the cytoplasm.
In a plant cell, the cell wall surrounds the cell membrane. Most substances can pass through the cell wall. But when these substances reach the cell membrane, only some of them are able to enter the cell. | |
Which animal is also adapted for flight? | [
"sea turtle",
"great blue heron"
] | 1 | Flamingos fly long distances every year in search of food and places to nest. They have wings instead of arms. Flamingos are adapted for flight.
Figure: flamingo. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the flamingo.
The flamingo has large, powerful wings. It is adapted for flight. Long, powerful wings help the flamingo travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The great blue heron has large, powerful wings. It is adapted for flight.... | |
Not supported with pagination yet | Using only these supplies, which question can Jackie investigate with an experiment? | [
"Does a rubber ball travel farther when launched from a metal catapult or from a wooden catapult?",
"Does a catapult with a longer arm launch a rubber ball farther than a catapult with a shorter arm?",
"Does a heavier ball travel farther than a lighter ball when launched from a catapult?"
] | 1 | Jackie visits a museum about ancient Greece. She notices an exhibit with models of wooden catapults that were used to launch large rocks across battlefields. She wonders what factors affect how far a catapult can launch an object. So, she decides to design an experiment. She has the following supplies available:
a wood... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Which better describes the Lost City ecosystem? | [
"It has water at the bottom of the ocean. It also has no sunlight.",
"It has bright sunlight. It also has organisms that crawl or stick to the ground."
] | 0 | Figure: Lost City.
Lost City is a deep sea ecosystem in the mid-Atlantic Ocean. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | The deep sea is a type of ecosystem. Deep sea ecosystems have the following features: water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground. So, Lost City has water at the bottom of the ocean. It also has no sunlight. | |
Not supported with pagination yet | Which sentence states a fact? | [
"Monarch butterflies have orange wings with black and white markings.",
"It is wrong to catch monarch butterflies or any other insect."
] | 0 | closed choice | grade3 | language science | writing-strategies | Opinion writing | Distinguish facts from opinions | A fact is something that can be proved to be true.
The month of July has more days than the month of June.
This is a fact. It can be proved by looking at a calendar and counting the number of days in each month.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
July is ... | The first sentence states a fact.
Monarch butterflies have orange wings with black and white markings.
It can be proved by observing monarch butterflies.
The second sentence states an opinion.
It is wrong to catch monarch butterflies or any other insect.
Wrong shows what a person believes, thinks, or feels. Another per... | |
Not supported with pagination yet | Which sentence states a fact? | [
"Earth is the most important planet in the solar system.",
"Our solar system contains eight planets."
] | 1 | closed choice | grade3 | language science | writing-strategies | Opinion writing | Distinguish facts from opinions | A fact is something that can be proved to be true.
The month of July has more days than the month of June.
This is a fact. It can be proved by looking at a calendar and counting the number of days in each month.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
July is ... | The second sentence states a fact.
Our solar system contains eight planets.
It can be proved by checking a drawing of the solar system.
The first sentence states an opinion.
Earth is the most important planet in the solar system.
Most important shows what a person believes, thinks, or feels. Another person might have a... | |
Not supported with pagination yet | What do these two changes have in common?
carving a piece of wood
picking up a paper clip with a magnet | [
"Both are chemical changes.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 2 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Carving a piece of wood is a physical change. The wood changes shape, but it is still made of the same type of matter.
Picking up a paper clip with a magnet is a physical change. The paper clip sticks to the magnet, but it is still made of the same type of matter.
Step 2: Look at each a... | |
Not supported with pagination yet | What information supports the conclusion that Clare acquired this trait? | [
"Clare knits sweaters using cotton, wool, and other types of yarn.",
"Clare learned how to knit in an after school program."
] | 1 | Read the description of a trait.
Clare knows how to knit sweaters. | closed choice | grade4 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Although Josh hasn't worked in years, his mother prefers to say that he's between jobs right now. | [
"paradox",
"euphemism"
] | 1 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Between jobs is an indirect way of saying unemployed. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The music box () the baby to sleep with its sweet melody. | [
"sang",
"put"
] | 0 | closed choice | grade10 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the word sang. It describes the music box as if it were a person with a sweet voice. | |
Which better describes the Gran Sabana ecosystem? | [
"It has a rainy season and a dry season. It also has warm summers.",
"It has a rainy season and a dry season. It also has long, cold winters."
] | 0 | Figure: Gran Sabana.
The Gran Sabana is a savanna grassland ecosystem in southeastern Venezuela. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A savanna grassland is a type of ecosystem. Savanna grasslands have the following features: warm summers and warm winters, a rainy season and a dry season, and soil that is poor in nutrients. So, the Gran Sabana has a rainy season and a dry season. It also has warm summers. | |
Which air temperature was measured within the outlined area shown? | [
"-2°C",
"5°C",
"12°C"
] | 1 | The map below shows air temperatures in the lower atmosphere on June 12, 2013. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Labo... | closed choice | grade6 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
The legend tells you that this air mass contained air with temperatures between 0°C and 10°C.
5°C is within this range.
-2°C and 12°C are outside of this range. | |
Identify the question that Edgar's experiment can best answer. | [
"Can pennies hold more drops of pure water or water mixed with hand soap?",
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Edgar used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Edgar recorded the number of drops he could add before the wa... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
What is the capital of Oregon? | [
"Olympia",
"Salem",
"Denver",
"Boise"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Salem is the capital of Oregon. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
I thought I'd forgotten how to play with a boomerang, but then it came back to me. | [
"pun",
"personification"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses a pun, a word or phrase that humorously suggests more than one meaning.
It came back to me means that I remembered something. It also means that the boomerang came back after it was thrown. | |
Not supported with pagination yet | Which change best matches the sentence?
Many pieces of rock fall down a hill. | [
"drought",
"deposition",
"landslide"
] | 2 | closed choice | grade3 | natural science | earth-science | Earth events | Classify changes to Earth's surface II | |||
What is the capital of Hawaii? | [
"Olympia",
"Portland",
"Santa Fe",
"Honolulu"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Honolulu is the capital of Hawaii. | |||
As Coco pulls on the toy, what is the direction of the opposing force? | [
"toward Coco",
"away from Coco"
] | 1 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
Two dogs, Rusty and Coco, play with a toy. Think about two of the forces that act on the toy:
Coco pulls toward herself.
Rusty pulls away from Coco. | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction Coco pulls on the toy.
Two dogs, Rusty and Coco, play with a toy. Think about two of the forces that act on the toy:
Coco pulls toward herself.
Rusty pulls away from Coco.
The text tells you that Coco pulls toward herself. The opposite direction is away from Coco. So, the direction of the opposing fo... | |
Which state is highlighted? | [
"Oklahoma",
"Mississippi",
"Tennessee",
"West Virginia"
] | 2 | closed choice | grade5 | social science | geography | States | Identify states of the Southeast | This state is Tennessee. | |||
Not supported with pagination yet | What does the idiom in this text suggest?
"Speak of the devil!" Joy declared when Kenneth strolled into the room. | [
"Joy didn't trust Kenneth.",
"Joy had just been speaking about Kenneth."
] | 1 | closed choice | grade6 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake. | The text uses an idiom, an expression that cannot be understood literally.
The idiom speak of the devil suggests that Joy had just been speaking about Kenneth. People say this when the person they've just been speaking about coincidentally arrives, as if summoned. | |
Which of the following statements is true? | [
"Eye color is an example of a gene.",
"Genes affect traits."
] | 1 | Look at the image and read the text. Then, answer the question.
variation in the human eye color trait
All organisms inherit certain traits from their parents. Information about these inherited traits is found in genes. Genes are pieces of hereditary material that are passed from parents to offspring. An organism's gen... | closed choice | grade7 | natural science | biology | Genes to traits | Genes, proteins, and traits: understanding the genetic code | Genes affect traits.
Genes contain information about inherited traits.
All organisms have genes.
All organisms have genes that contain information about their inherited traits.
Eye color is an example of a gene.
An organism's eye color is affected by its genes. But eye color is not a gene. Eye color is a trait, which i... | ||
Not supported with pagination yet | Complete the statement.
During this chemical reaction, the air around the reaction becomes (). | [
"colder",
"warmer"
] | 1 | When a chemical reaction absorbs or releases thermal energy, the reaction causes a change in temperature. Read the passage about a chemical reaction that absorbs or releases thermal energy. Then, follow the instructions below.
Some chemical substances explode under pressure. One such substance, nitrogen triiodide (NI3)... | closed choice | grade6 | natural science | chemistry | Chemical reactions | Describe energy changes in chemical reactions | During a chemical reaction, thermal energy is absorbed or released as heat. This transfer of thermal energy changes the temperature of the reaction's surroundings. The surroundings are everything around the reaction, such as the solution that the reaction takes place in or the air nearby.
Some reactions release thermal... | To determine whether the air around the reaction becomes warmer or colder, look for the text that describes the movement of thermal energy during the reaction.Some chemical substances explode under pressure. One such substance, nitrogen triiodide (NI3), explodes at even the lightest touch! When this happens, the nitrog... |
Which better describes the Eastern Siberian Taiga ecosystem? | [
"It has short, cool summers. It also has many evergreen trees.",
"It has short, cool summers. It also has soil that is rich in nutrients."
] | 0 | Figure: East Siberian Taiga.
The Eastern Siberian Taiga is a taiga ecosystem in Russia. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A taiga is a type of ecosystem. Taigas have the following features: long, cold winters and short, cool summers, many evergreen trees, and soil that is poor in nutrients. So, the Eastern Siberian Taiga has short, cool summers. It also has many evergreen trees. | |
Which solution has a higher concentration of purple particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 1 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
Select the organism in the same species as the Steller's jay. | [
"Cyanocitta stelleri",
"Goura victoria",
"Larus occidentalis"
] | 0 | This organism is a Steller's jay. Its scientific name is Cyanocitta stelleri. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Steller's jay's scientific name is Cyanocitta stelleri.
Cyanocitta stelleri has the same scientific name as a Steller's jay. So, these organisms are in the same species.
Goura victoria does not have the same scientific name as a Steller's jay. So, Cyanocitta stelleri and Goura victoria are not in the same species.
La... | |
During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each aquarium",
"each aquarium . . . the surroundings"
] | 1 | Two identical aquariums were next to an open window. One aquarium had a plastic cover on it, and the other was uncovered. This table shows how the temperature of each aquarium changed over 1.5hours. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each aquarium decreased, which means that the thermal energy of each aquarium decreased. So, thermal energy was transferred from each aquarium to the surroundings. | |
Not supported with pagination yet | Which is a complete sentence? | [
"London is the capital city of England.",
"The calendar will help her plan ahead, she will circle important days."
] | 0 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence, a fragment, or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb.
Knows the answer.
This is a sentence fragment. It is missing a subj... | London is the capital city of England is a complete sentence. The subject is London, and the verb is is. | |
Which state is highlighted? | [
"Louisiana",
"Texas",
"Mississippi",
"Alabama"
] | 0 | closed choice | grade5 | social science | geography | States | Identify states of the Southeast | This state is Louisiana. | |||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
From the look on her face, Helen is carrying an albatross around her neck. | [
"Egyptian history",
"a poem"
] | 1 | closed choice | grade7 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion an albatross around her neck is a poem.
In Samuel Taylor Coleridge's poem "The Rime of the Ancient Mariner," a sailor shoots and kills an albatross, an action that curses the ship and crew. As his crew members die, the Ancient Mariner feels his guilt hanging like the albatross around his neck... | |
Which specific humidity level was measured within the outlined area shown? | [
"12 grams of water vapor per kilogram of air",
"11 grams of water vapor per kilogram of air",
"4 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on September 12, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in Australia on that day.
Look at the map. Then, answer the question below.
Data source: United ... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 2 and 8 grams of water vapor per kilogram of air.
4 grams of water vapor per kilogram of... | |
Identify the question that Kurt's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Kurt mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He al... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Based on this information, what is Moxie's phenotype for the coat pattern trait? | [
"solid coloring",
"white spots"
] | 1 | In a group of cows, some individuals have solid coloring and others have white spots. In this group, the gene for the coat pattern trait has two alleles. The allele for solid coloring (A) is dominant over the allele for white spots (a).
Moxie is a cow from this group. Moxie has the homozygous genotype aa for the coat p... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Moxie's genotype for the coat pattern gene is aa. Moxie's genotype of aa has only a alleles. The a allele is for white spots. So, Moxie's phenotype for the coat pattern trait must be white spots.
To check this answer, consider whether Moxie's alleles are dominant or recessive. The allele for solid coloring (A) is domin... |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
beast - brownie | [
"born",
"bundle"
] | 0 | closed choice | grade5 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since born is between the guide words beast - brownie, it would be found on that page. | |
Not supported with pagination yet | What is the mass of a passenger airplane? | [
"50 pounds",
"50 tons",
"50 ounces"
] | 1 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of a passenger airplane is 50 tons.
50 ounces and 50 pounds are both too light. |
Not supported with pagination yet | What is the mass of a bicycle? | [
"8 grams",
"8 kilograms"
] | 1 | Select the better estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose metric units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There... | The better estimate for the mass of a bicycle is 8 kilograms.
8 grams is too light. |
Not supported with pagination yet | How long is a tennis racket? | [
"20 miles",
"20 yards",
"20 feet",
"20 inches"
] | 3 | Select the best estimate. | closed choice | grade8 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a tennis racket is 20 inches.
20 feet, 20 yards, and 20 miles are all too long. |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
recently - ruby | [
"rain",
"root"
] | 1 | closed choice | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since root is between the guide words recently - ruby, it would be found on that page. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. | |
Not supported with pagination yet | Based on this information, what is this plant's phenotype for the fruit sheen trait? | [
"glossy fruit",
"dull fruit"
] | 0 | In a group of cucumber plants, some individuals have dull fruit and others have glossy fruit. In this group, the gene for the fruit sheen trait has two alleles. The allele for dull fruit (F) is dominant over the allele for glossy fruit (f).
A certain cucumber plant from this group has the homozygous genotype ff for the... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | The cucumber plant's genotype for the fruit sheen gene is ff. The cucumber plant's genotype of ff has only f alleles. The f allele is for glossy fruit. So, the cucumber plant's phenotype for the fruit sheen trait must be glossy fruit.
To check this answer, consider whether the cucumber plant's alleles are dominant or r... |
Not supported with pagination yet | Complete the statement.
Copper is (). | [
"an elementary substance",
"a compound"
] | 0 | Copper is a metal that is used in electrical wires and in coins. The chemical formula for copper is Cu. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | You can tell whether copper is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for copper is Cu. This formula contains one symbol: Cu. So, the f... |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... | |
What is the capital of Delaware? | [
"Montpelier",
"Birmingham",
"Wilmington",
"Dover"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | |||
Select the organism in the same species as the Eurasian beaver. | [
"Lontra canadensis",
"Castor fiber",
"Hystrix cristata"
] | 1 | This organism is a Eurasian beaver. Its scientific name is Castor fiber. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Eurasian beaver's scientific name is Castor fiber.
Hystrix cristata does not have the same scientific name as a Eurasian beaver. So, Castor fiber and Hystrix cristata are not in the same species.
Castor fiber has the same scientific name as a Eurasian beaver. So, these organisms are in the same species.
Lontra canade... | |
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her narrative voice?
During our last game, our pitcher Andy suddenly grabbed his wrist after throwing a fastball. Coach Becker asked him if he was OK, and Andy said that it hurt. None of us knew what was wrong with him and he was wh... | [
"by removing biased language",
"by adding dialogue",
"by using active voice"
] | 1 | closed choice | grade11 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her narrative voice by adding dialogue.
For example, the writer could replace the underlined sentences with exchanges between Coach Becker and Andy.
During our last game, our pitcher Andy suddenly grabbed his wrist after throwing a fastball. Coach Becker asked him if he was OK, and ... | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Grandma Julia,",
"Dear grandma Julia,"
] | 0 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Grandma Julia is capitalized because it is a proper noun. | |
What is the name of the colony shown? | [
"South Carolina",
"Indiana",
"Rhode Island",
"Georgia"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Georgia. | |||
Not supported with pagination yet | Which sentence states a fact? | [
"The Vikings came from what are now the countries of Denmark, Sweden, and Norway.",
"The Vikings carried out their raids in a swift, vicious fashion."
] | 0 | closed choice | grade5 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or fe... | The second sentence states a fact.
The Vikings came from what are now the countries of Denmark, Sweden, and Norway.
It can be proved by reading a history book about Vikings.
The first sentence states an opinion.
The Vikings carried out their raids in a swift, vicious fashion.
Vicious shows what a person believes, think... | |
Not supported with pagination yet | Complete the sentence.
Boiling an egg is a (). | [
"physical change",
"chemical change"
] | 1 | closed choice | grade5 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form new molecules. The types of molecules in matter before an... | Boiling an egg is a chemical change. The heat causes the matter in the egg to change. Cooked eggs and raw eggs are made of different types of matter. | |
Which property matches this object? | [
"bendable",
"hard"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A hard object keeps its shape when you squeeze it. The rainbow sucker is hard.
A bendable object can be bent without breaking. The rainbow sucker is not bendable. | |
What can Reba and Johnny trade to each get what they want? | [
"Reba can trade her tomatoes for Johnny's carrots.",
"Johnny can trade his broccoli for Reba's oranges.",
"Johnny can trade his almonds for Reba's tomatoes.",
"Reba can trade her tomatoes for Johnny's broccoli."
] | 3 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Reba and Johnny open their lunch boxes in the school cafeteria. Neither Reba nor Johnny got everything that they wanted. The tabl... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Reba wants broccoli. Johnny wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | ||
Not supported with pagination yet | Using only these supplies, which question can Diana investigate with an experiment? | [
"Do small rocks or large rocks skip more times when thrown across the river?",
"Do round rocks or flat rocks skip more times when thrown across the river?",
"Do rocks skip more times when thrown across a river or across a pond?"
] | 0 | Diana likes to skip rocks at the river. She notices that some of the rocks she throws skip off the surface of the water many times, while others skip once and then sink. She wonders what factors affect how well rocks skip on the water. So, she decides to design an experiment. She has the following supplies available:
1... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Which figure of speech is used in this text?
There was a clear consensus in the Mueller family that they should put their dog to sleep, rather than let him continue to suffer. | [
"euphemism",
"paradox"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Put their dog to sleep is a more indirect way of saying have the veterinarian kill their dog. |
Subsets and Splits
Validation Subject & Topic Summary
Reveals the distribution and count of images across different subjects, topics, and categories, highlighting the most prevalent combinations.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of entries across different topics where images are missing, allowing for a more representative analysis of text-only data.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of text entries across different topics, ensuring that each topic is proportionally represented, which is useful for further analysis or model training.
Random Sample by Topic Ratio
This query balances the dataset by randomly selecting a proportional number of items from each topic to create a balanced subset of 3000 items, revealing how well-represented each topic is in the dataset.
Topic Counts by Grade
Provides a breakdown of the number of questions by topic (physics, chemistry, biology, geography) for each grade level, revealing the distribution of question types.
Validation Category Counts
Counts the number of unique questions per category, helping to understand the distribution of questions across different categories.
SQL Console for derek-thomas/ScienceQA
Identifies categories, questions, and answers that appear more than four times in the validation dataset with images, highlighting common or repetitive entries.
ScienceQA Validation Grouped Data
Provides a count of images and overall occurrences for each combination of subject, topic, category, and answer, helping to identify popular or common configurations.
Train Data with Numeric Choices
This query identifies distinct rows in the dataset where one of the elements in the choices column contains a number and the image column is null, providing insight into data completeness and specific patterns in the choices.
Physics Train with Images and Lectures
Retrieves physics educational records with images and lectures for specific grade levels, providing basic filtering but offering limited analytical insight beyond data availability.
Physics Q&As with Images
Retrieves physics-related training examples with images for specific grade levels, providing basic filtered data but offering limited analytical insight beyond simple categorization.
Physics Questions Gr 2-6 With Images
Retrieves physics-related test items with images for specific grade levels, providing basic filtered data but offering limited analytical insights beyond simple data retrieval.
Filter Text-only Train Questions
Retrieves questions and related metadata from the dataset excluding those with images, offering basic data filtering.
Skills Without Images
Counts the number of skills where the image is missing, providing a basic overview of incomplete data.
Top 10 Hard Text Questions
Retrieves the top 10 longest questions without images, ordered by grade level in descending order, providing basic insight into potentially more complex questions.
SQL Console for derek-thomas/ScienceQA
Counts the occurrences of each category, question, and answer combination where an image is present, providing basic filtering on the dataset.
List ScienceQA Topics
Lists all unique topics in the dataset, which provides a basic overview of the categories present.
Cultural Questions Without Images
Retrieves 100 entries from the 'train' dataset where the image is missing and the topic is 'culture', providing basic filtering with limited analytical value.
Biology Skills for Grades 2 & 3
Lists unique skills and categories for biology topics in grades 2 and 3, providing basic filtering of the dataset.
Biology Qs for Grades 2 &
Retrieves all entries for grade 2 and grade 3 students focusing on the biology topic, providing a basic filtered view of the dataset.
Biology Grade 3 Questions Count
Counts the number of entries for grade 3 students in the biology topic, providing a basic count of data points.
Select Test Rows With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering without deep analytical value.
Test Images Query
This query retrieves a limited sample of rows where the image column is not null, providing basic filtering but minimal analytical value.
Test Data with Images
The query filters out rows where the image column is not null, providing a basic subset of the data but without much analytical insight.
Select Test Entries With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering but no deeper analytical insight.